Root's finishes with 133 off 129 balls
Hales makes 95, Morgan unbeaten on 75
Tamim top-scores for Bangladesh (128)
Plunkett is England's best bowler (4-59)
Watch full highlights on BBC Two at 23:20 BST (UK only)
England v Bangladesh
England: Roy, Hales, Root, Morgan, Stokes, Buttler, Moeen, Woakes, Plunkett, Ball, Wood.
Bangladesh: Tamim, Sarkar, Kayes, Shakib, Mushfiqur, Sabbir, Mahmudullah, Mosaddek, Mortaza, Mustafizur, Rubel.
England v Bangladesh
Bangladesh suffered a 240-run thrashing by India in their final warm-up game.
Shakib Al Hasan's team were bowled out for just 84 in reply to India's 324-7 - pace bowlers Bhuvneshwar Kumar and Umesh Yadav doing the damage with three wickets apiece.
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Stevie Anscombe, Northampton: England as favourites in the sporting world? There is one ongoing international fixture in the sport of Bar Billiards, where in recent years the English team has consistently been pre-match favourites. Just need a bookie to offer odds! Ladies and gents I give you England v Jersey.
England v Bangladesh
BBC Radio 5 live sports extra
Boot up the wireless, stick one headphone in your ear at work, pretend you're transcribing something...
5 live sports extra coverage is about to get underway. Listen in this page.
ICC Champions Trophy: Michael Vaughan's four reasons why England can title
Former England captain Michael Vaughan gives four reasons why his former side can win the ICC Champions Trophy - and two reasons why they might not.
England v Bangladesh
England all-rounder Ben Stokes on Sky Sports: "It went alright, I bowled 10 deliveries off a full run this morning. There's no pain there but it doesn't mean that I won't feel no pain. It's a starting point and it gives me confidence.
"Ideally I'd like to get through 10 overs but we'll see."
England v Bangladesh
England lost six wickets for 20 runs in the first half hour of play as they lost the third one-day international against South Africa at Lord's by seven wickets at the weekend.
Maybe that's why they're having a bowl...
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Chris Etheridge: Disappointed England are bowling first - would have been good to see a big score in the first innings
Kev Sandall: England bowling first, this could be a football score...
England v Bangladesh
Adil Rashid has dropped out of the England side today then, meaning that Moeen Ali is the only spinner. The right call?
England v Bangladesh
Bangladesh captain Mashrafe Mortaza: "We'd like to have bowled. It might swing a bit but it looks a good wicket."
England v Bangladesh
Image source, Getty ImagesJake Cope, Forecaster BBC Weather Centre: "It’s the first day of summer and the weather is indeed playing cricket. It’s going to be warm and sunny with light winds all day so barring a batting collapse (apologies in advance) we should see a full 100 overs of white ball action.
"At the start of play it will be around 17C peaking at 25 or 26C mid-afternoon. Pollen and UV levels are both high today so there will most likely be a few red faces at The Oval today, for one reason or another."
England v Bangladesh
England captain Eoin Morgan, after revealing his team will contain four seam bowlers plus Ben Stokes: "There's no concern about Ben really. Given the ground and the opposition we're playing against, we think four seamers is the way to go."
England v Bangladesh
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England v Bangladesh
...and bowl!
England have everybody fit, and Jake Ball comes into the team as they name four seamers.
England v Bangladesh
You really can get excited about BBC Sport's coverage of this tournament:
Watch highlights of the ICC Champions Trophy on BBC Two every night of the tournament, follow every delivery via Test Match Special's ball-by-ball commentary on BBC Radio 5 live sports extra and watch the best of the action with in-play highlights alongside the live text commentary on the BBC Sport website.
Yep, you can see all the best clips RIGHT HERE on this page. Superb.
England v Bangladesh
BBC Radio 5 live sports extra
As you'd expect - demand! - we have full ball-by-ball commentary on 5 live sports extra, with coverage starting at 10:15 BST.
You can listen to that right here too of course - just press play. That's UK Only though I'm afraid.
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Chris Podd: I hope England bat first today, watch out 444/3
Aiming high Chris...
England v Bangladesh
Almost time for the toss, where all things team-related shall be revealed.
England v Bangladesh
Stephan Shemilt
BBC Sport
Image source, ReutersBen Stokes had a fitness test on the outfield this morning and is expected to be able to bowl a few overs.
All-rounder Stokes, 25, has been suffering from a knee problem but bowled in practice on Wednesday.
"I certainly see him bowling," said England captain Eoin Morgan.
Morgan also confirmed Chris Woakes is fit and Jason Roy will retain his place opening the batting.